docs: def iter_lines(self, chunk_size=ITER_CHUNK_SIZE, decode_unicode=None, delimiter=None):
          """Iterates over the response data, one line at a time.  When
          stream=True is set on the request, this avoids reading the
          content at once into memory for large responses.
  
          .. note:: This method is not reentrant safe.
          """
  
          pending = None
  
          for chunk in self.iter_content(chunk_size=chunk_size, decode_unicode=decode_unicode):
  
              if pending is not None:
                  chunk = pending + chunk
  
              if delimiter:
                  lines = chunk.split(delimiter)
              else:
                  lines = chunk.splitlines()
  
              if lines and lines[-1] and chunk and lines[-1][-1] == chunk[-1]:
                  pending = lines.pop()
              else:
                  pending = None
  
              for line in lines:
                  yield line
  
          if pending is not None:
              yield pending